<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>require.js-demo</title>
    <link rel="stylesheet" href="css/base.css">
    <link rel="stylesheet" href="css/window.css">
</head>
<body>
    <div id='a'>
        点击我
    </div>
</body>
<script data-main='js/app' src='js/require.js'>
</script>
</html>